/*
    This file is part of the iText (R) project.
Copyright (c) 1998-2025 Apryse Group NV
    Authors: Apryse Software.

    This program is offered under a commercial and under the AGPL license.
    For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

    AGPL licensing:
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
using System;
using iText.Kernel.XMP.Options;
using iText.Test;

namespace iText.Kernel.XMP.Impl
{
    [NUnit.Framework.Category("UnitTest")]
    public class XMPNodeTest : ExtendedITextTest 
    {
        [NUnit.Framework.Test]
        public virtual void XmpNodeTreeUnmodifiableChildrenTest() {
            XMPNode node = new XMPNode("rdf:RDF", "idk", new PropertyOptions());
            node.AddChild(new XMPNode("rdf:Description", "idk", new PropertyOptions()));
            var a = node.GetUnmodifiableChildren().GetEnumerator();
            while (a.MoveNext())
            {
                //Modifying original tree after getting an iterator on unmodifiable collection
                //If we wouldn't create a copy of original children we would get System.InvalidOperationException
                NUnit.Framework.Assert.DoesNotThrow(() =>
                    node.AddChild(new XMPNode("rdf:Description1", "idk", new PropertyOptions())));
            }
        }

    }
}
